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EGTB: win in 4 half-moves

# move score
1 Rb5 win in 3 half-moves
2 Ne7 draw
3 Nf4 draw
4 Ra8 draw
5 Rb6 draw
6 Rb7 draw
7 Rh8 draw
8 Nh8 loss in 6 half-moves
9 Nf8 loss in 4 half-moves
10 Rg8 loss in 4 half-moves
11 Ne5 loss in 2 half-moves
12 Nh4 loss in 2 half-moves
13 Rb1 loss in 2 half-moves
14 Rb2 loss in 2 half-moves
15 Rb3 loss in 2 half-moves
16 Rb4 loss in 2 half-moves
17 Rc8 loss in 2 half-moves
18 Rd8 loss in 2 half-moves
19 Re8 loss in 2 half-moves
20 Rf8 loss in 2 half-moves